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| All Patents in class 417/328 | |||||
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| Number | Date | Patentee | Title | Type | |
| 33,226 | Sep. 03, 1861 | R. Porter | Improvement in apparatus for elevating liquids by retained power | water elevators | |
| 38,715 | May 26, 1863 | R. Porter | Improvement in air-pumps | air pumps | |